ORCHIDACEAE (ORCHIS FAMILY) 



309 





615. H. clavellata. 

 Flower x 1. Lip x 1 

 Column x 2. 



appendages of the stigma oblong. (Gymnadeniopsis Rydb.) Swamps along 

 the coast, Del. to Fla., westw. to Ark. and Tex. June-Aug. FIG. 614. 



t- H- Leaves cauline, one or two. 

 *- Lip crenulate. 



6. H. Integra (Nutt.) Spreng. Stem about 37 cm. high, several-leaved ; the 

 lower leaves elongated, oblong-lanceolate, the others becoming smaller and 

 bract-like; raceme densely many-flowered, cylindrical ; flowers small, yellow ; 

 lip ovate, entire or slightly crenulate, or short-toothed along the margin, shorter 

 than the awl-shaped descending spur ; appendages of the stigma two, lateral, 

 oblong, fleshy. (Gymnadeniopsis Rydb.) Wet pine-barrens, N. J. to Fla., w. 

 to Tenn. and Tex. July, Aug. 



w -w- Lip ^-toothed at the apex. 



7. H. clavellata (Michx.) Spreng. Stem 19-40 cm. high, slender, with one 

 or two oblong or oblanceolate obtuse leaves, and two 



or three linear-lanceolate bracts above ; raceme 

 3-16-flowered, subcylindric ; flowers greenish- white ; 

 lip wedge-oblong, truncate, with three short apical 

 teeth or lobes ; spur slender, slightly clavate, curved 

 upwards, longer than the ovary ; appendages of the 

 stigma 3, oblong, clavate-tuberculate, one outside each 

 orbicular gland, and one between them rising as high 

 as the anther-cells. (H. tridentata Hook. ; Gymna- 

 deniopsis clavellata Rydb.) Bogs and moist soil, 

 Nfd. to Minn, and southw. July, Aug. FIG. 615. 



-t- -i- -i- Leaves radical. 

 ++ Lip less than 5 mm. long. 



8. H. unalasce"nsis (Spreng.) Wats. Plant slender, 3-5 dm. high, leafy at 

 base ; leaves oblanceolate, withering before the flowers open ; sepals slightly 

 gibbous at base, 1-nerved, narrowly oval, lateral ones adnate at base to the lip ; 

 petals lanceolate, obtuse ; lip oblong-hastate ; spur filiform or slightly clavate, 

 shorter than the ovary. (Piperia Rydb.) Damp woods, Anticosti I., Que.; 

 Ont., westw. to Alaska and Cal. June-Sept. 



w H-*. Lip more than 5 mm. long. 

 = Spur about equal to the lip. 



9. H. obtusata (Pursh) Richards. Plants 10-26 cm. high ; leaf solitary, 

 basal, obovate or spatulate-oblong ; flowers greenish or whitish, 5-15 in a loose 



raceme at the summit of a naked scape ; upper sepal broad and 

 rounded, lateral sepals and the petals lance-oblong; lip entire, 

 linear-lanceolate, deflexed, 6 mm. long, about the length of the 

 tapering curved spur. (Lysiella Rydb.) Swamps and rich 

 woods, Nfd. to Alaska, s. to N. Y., Minn, and Col. 

 July, Aug. (Eu.) FIG. 616. 

 = = Spur two or more times longer than the lip. 

 10. H. Hookeri Torr. Leaves orbicular or 

 elliptical, near the ground, 3.5-10 cm. broad; 

 scape usually ebracteate, 12-16 cm. high, having 8-20 upright 

 yellowish-green flowers in a strict raceme 2-4 cm. through ; 

 sepals ovate-lanceolate, the upper sepal dilated at base, acumi- 

 nate; lip lanceolate, pointed, about I cm. long; spur slender, acute, 2cm. long. 

 (Lysias Hookeriana Rydb.) Dry or damp woods, e. Que. to Pa., w. to Minn. 

 June, July. FIG. 617. 



11. H. orbiculata (Pursh) Torr. Leaves orbicular or elliptical, 6-19 cm. 

 broad, spreading flat on the ground, shining above, silvery beneath ; scape with 

 one or more lanceolate bracts, 6-32 cm. high, having 10-20 or more greenish- 

 white flowers in a loose raceme 4-6 cm. through ; upper sepal orbicular, lateral 



616. II. obtusata 

 x iy 3 . 



617. H. Hookeri 



